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Kallektuffquell
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The Kallektuffquell is a fascinating calcareous tuff spring in the Black Ernz valley, renowned for its crystal-clear cascades and moss-covered rocks. The lime-rich water emerges from the Luxembourg sandstone and deposits calcium carbonate upon contact with air, creating porous rock formations known as tuff over thousands of years. To protect this sensitive ecosystem, a wooden boardwalk leads visitors directly to the spring and its terraced water basins. The water maintains a constant temperature, fostering a humid microclimate where rare moss species thrive. Kallektuffquell is a prime example of the hydrogeological processes in the Mullerthal and a highlight for nature photographers. The bustling green tones of the moss provide a striking contrast to the white mineral deposits and the translucent water.
- Location: Luxembourg
- Top sights: De Schwaarze Mann · Schiessentümpel · Saints-Pierre-et-Paul
- Nearby: Consdorf (5 km)
Best time to visit & climate
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 0 | 1 | 4 | 8 | 12 | 16 | 18 | 17 | 14 | 9 | 5 | 1 |
| Rain mm | 75 | 64 | 63 | 49 | 75 | 75 | 74 | 81 | 59 | 67 | 72 | 84 |
📋 Practical info
Visiting
Kallektuffquell is a freely accessible natural site in Müllerthal that can be visited at any time. The spring and the surrounding limestone tuff terraces can be viewed without an entrance fee.
Typical hours
Since the area is not guarded, it is accessible around the clock, but best explored in daylight. Early morning or after rainfall, the lime deposit is particularly visible and the moss bright green.
Photography
Photography is allowed everywhere, the greenish moss cushions and white lime deposits offer fascinating macro shots. A polarising filter can help reduce reflections on the water.
Time needed
For a visit to the spring and its immediate surroundings, allow about 15 to 20 minutes. Those who want to explore the entire limestone tuff landscape can spend half an hour to an hour.
Combine with
Kallektuffquell lies along several hiking trails of Müllerthal and can be combined with the 'Huel Lee' cave or the 'Perekop' rock formation. The nearby 'Berdorfer Panoramaweg' is also a worthwhile addition.
Getting there
The spring is best reached via a hiking trail from the car park 'Berdorfer Haff' in about 20 minutes. Follow the signs 'Kallektuffquell' which guide the way through the forest.
Insider tip
Wear waterproof shoes or rubber boots, as the ground around the spring can be very wet and muddy. A small mirror can help reflect soft light onto the moss surfaces.
Geography
Facts
- Located along Route 3 of the Mullerthal Trail.
- Tuff formation through the precipitation of calcium carbonate.
- A wooden boardwalk protects the delicate sinter terraces.
- The spring water emerges at a constant temperature year-round.
- Home to rare moss communities known as Cratoneurion.
- A significant geological monument within the Mëllerdall Nature Park.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Kallektuffquell (10)
Heringerbuerg🏰 castle
Castle ruins on a rock.
Saint-Sébastien
Church in Luxembourg, dedicated to Saint Sebastian.
Veräinsbau Christnach
Community centre in Christnach used for cultural events.
Haupeschkierch
Church in Luxembourg, dedicated to Saint Hubert.
Goldfralay Felsformation
Rock formation, possibly an old quarry.
Schnellert Dolmen
Pseudo-dolmen, first excavated in 1908; remains of a man and child (c. 2700 BC) found.
Sights nearby
Frequently asked questions
What is Kallektuffquell?
A calc-tuff spring where calcium deposits on moss to create terraces.
Where is the spring located?
It is located in the Black Ernz Valley, accessible via a wooden boardwalk.
Is it allowed to touch the spring?
You should avoid touching it to protect the sensitive calcium structures.
Is the path there accessible?
The boardwalk is easy to walk on, but the valley path can be uneven.
Is the water there crystal clear?
Yes, the water is very pure and flows into a small, turquoise pool.
Kallektuffquell: where is it located?
Kallektuffquell is located in Luxembourg.
Kallektuffquell: what is there to see?
Highlights include De Schwaarze Mann, Schiessentümpel, Saints-Pierre-et-Paul.
Kallektuffquell: when is the best time to visit?
The most pleasant time to visit is Jun, Aug.
Kallektuffquell: why is it worth visiting?
The Kallektuffquell is a fascinating calcareous tuff spring in the Black Ernz valley, renowned for its crystal-clear cascades and moss-covered rocks.
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